piper



E. S. PIPER.

(No Model.)

BELL.

Patented Sept. 20, 1892/'.

we News versus cu., ua-mmm., msnmamu, u. c.

Ntra@ STATES PATENT erica.

EDWIN S. PIPER, OF BRISTOL, CONNECTICUT, ASSIGNOR OF ONE-HALF TO FRANKCLAYTON, OF SAME PLACE. i

BELL.

SPECIFICATION forming part of Letters Patent No. l1582,984, datedSeptember 20, 1892.

Application tiled May 9. 1892. Serial No. 432,324. (No model.)

T0 a/ZZ whom it may concern:

Be it known that I, EDWIN S. PIPER, of Bristol, in the county ofHartford and State of Connecticut, have invented a new `ImprovementinBells; and I do hereby declare the following, when taken in connectionwith accompanying drawingsand theletters of reference marked thereou,tobe a full, clear, and exact description of the same, and which saiddrawings constitute part of this specification, and represent, in

Figure l, a view in vertical section,on the line ct b of Fig. 2, of acall-bell constructed in accordance with my invention; Fig.2,a plan viewof the bell with the bell properfremoved and the upper movement-platebeing broken away; Fig. 3, a broken view showing the pushtube at thelimit of its inward or push movement; Fig. 4, a view, partly in verticalsection and partly in elevation, of a door-bell embodying my invention.Y,

My inventionrelates to an improvement in door and call bells, andparticularly to mechanism for operating their hammers, the object beingto producea simple, durable, convenient, effective, and ornamental bellat a low cost of manufacture.

With these ends in view my invention consists in the combination, with apush-tube having its inner end constructed with one or more spiralslots, of an escapement-'shaft having one end entered into the saidslotted end of the tube and furnished with a transverse pin which entersthe slot or slots therein, a spring for recovering the tube after it ispressed inward, a bell and bell-hammer, connections between the saidshaft and hammer, whereby the latter is actuated by the rotary movementimparted to the former by the inward movement of the push-tube, which isheld against rotation while it is pushed inward, and means forsupporting and guiding the said parts.

My invention further consists incertain details of construction andcombinations of parts, as will be hereinafter described, and pointed outin the claims.

As shown in Figs. l, 2, and 3 of the drawings, the bell is constructedwith a push-tube A, having its outer end furnished with a cap A',forming a finger-piece and having its outer face concaved andsufficiently roughened so that when the finger is pressed against it itwill be frictionally restrained from rotation while it is being pushedinward. This cap may of course take some different forms, and I do notlimit myself to any particular way of making it, so long as the resultabove mentioned is secured. It might be formed integral with thetube,which, however, it will probably be more convenient to make asshown. The inner end of the tube is constructed with twocoarsely-pitched slots A2 A2, each extending about half-way around itand located eX- actly opposite each other, so as to receive therespective ends ot' a pin B, which is transversely mounted in the innerend of an escapement-shaftO, which is entered into the said inner end ofthe tube. The outer end of the said shaft is journaledin the lowermovement-plate D, which is connected, as herein shown, (see Fig. 2,) bythree pillars D with the upper movement-plate D2, which has attached toit a hollow post E, externally-threaded at its upper end for theattachment of the bell F, which may be of any-suitable construction. Theshaft C has mounted upon it a heavy escapement-wheel G, which is engagedby the pallets of an anchor-verge H, secured to an arbor I, having itsopposite ends journaled in the said plates and projecting at its upperend through the upper plate D2 for the attachment of the tail J of thehammer J', which is vibrated in a horizontal plane for striking thebell. A spiral spring K, interposed between the cap A of the tube andthe inner end of the escapement-shaft C, is provided for recovering thetube or pushing it back into its normal position after it is relieved ofpressure upon its cap. At this time, the`friction and inertia of thetube being less than the friction and inertia of the shaft, wheel,pallet-arbol', and hammer, the tube rotates while the other parts remainat rest. The tube plays back and forth in the hollow post E, which, asbefore described, is secured to the movement` plate D2. The saidmechanism is for the most part within the hollow base or standard L,which may be of any approved construction.

I do not limit myself tothe particular construction and arrangement ofparts shown and described, my invention comprehending, broadly, the useof a spring-recovered pushtube held against rotation while being pushedIOO inward by manual engagement with its outer end and having its innerend spirally slotted to receive a pin mounted in ashaft of a trainarranged to actuate a bell-hammer.

-I need only say, respecting the operation of the bell, that to ring ita finger is pushed Aagainst the cap of the push-tube in such a manner asto develop sufficient friction betweenvthe finger and cap to prevent thetube from rotation while it is being pressed inward. As the tube ispushed inward the walls of the slots in its inner end will coact withthe pin in the escapement-shaft, so as to overcome the inertia of thesame and its connections and actuate them in ringing the bell. If thepush-tube should rotate under the finger to some extent, it would stilloperate the train, but with less eect, according to the amount of suchrotation. So soon as the push-tube has been pressed inward to the limitof its inward movement the finger is naturally removed from it,whereupon its spring will shoot it back to its normal position ofreadiness to be pushed inward, and as the inertia of the tube when notheld against rotation by the finger is less than the inertia of thetrain the tube will be rotated instead of the escapement-shaft under thepower of the spring which is provided to recover the tube.

As shown by Fig. 4 of the drawings, my invention is applied to theconstruction of a door-bell. In this case the tube M is made ofsufficient length to pass through a door or casing, its outer end beingpartially inclosed in a circular plate N, having a central depressionand corresponding in general appearance to the housing of an electricpush-button. The inner end ol" the tube is constructed with slots M M',as before described, to receive the opposite ends of a pin O, mounted inan escapement-shaft P, having its inner end entered into the tube andits outer end journaled in the outer movement-plate Q, which isconnected by pillars R R to a circular plate S, adapted to be secured tothe opposite side of the door or casing T. The said shaft isfurnishedwith an escapeInent-wheel P which is engaged by the opposite pallets ofa verge U, mounted on an arbor U', to which is attached the tail V of abell-hammer V', which strikes the bell W, secured to a threaded post W',attached to the movement-plate Q. Inasmuch as this bell operates in thesame way as the bell already described, it is thought unnecessary torefer to it more at length than has been done. The same principle ofconstruction might also be applied to making a bicycle-bell.

I have shown and described the inner end of the tube as provided withtwo spiral slots and a pin arranged to enter both of them; but one slotwould do, although the device would not then work as freely. I wouldtherefore have it understood that I do not limit myself to the exactconstruction herein shown and described, but hold myself at liberty tomake such changes and alterations therein as fairly fall within thespirit and scope of my invention. I am aware, however, that it is old tomake a bell with a push-rod containing a spiral through which itactuates the bell-hammer train, and I do not therefore claim thatconstruction broadly.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination, with a push-tube having its inner end constructedwith one or more spiral slots and its outer end adapted for directmanual engagement, of an escapementshaft having one end entered into thesaid slotted end of the tube and furnished with a pin which enters theslot or slots therein, a spring interposed between the outer end of thetube and theinclosed end of the shaft for recoveringthetubeafterithasbeen pressed inward, a bell and a bell-hammer, connectionsbetween the said shaft and ham mer,whereby the latter is actuated androtary movement is imparted to the former by the inward movement of thetube, and means for supporting and guiding the said parts, substantiallyas described.

2. The combination, with a push-tube having its inner end constructedwith one or more spiral slots and its outer end provided with aroughened cap forxninga finger-piece, of an escapement-shaft having oneend entered into the said slotted end of the tube and furnished with apin which enters the slot or slots therein, a spring interposed betweenthe said cap and shaft for recovering the tube afteritis pressedinward,a bell and Vbell-hammer, connections between the said shaft and hammer,whereby the latter is actuated by the rotary movement imparted to theformer by the push-tube, and means for supporting and guiding the saidparts, substantially as described.

3. In avbell, the combination, with a pushtube having its outer endconstructed with a cap forming a linger-piece and its inner endconstructed with one or more spiral slots, of an escapement-shaft havingone end entered. into the said slotted end of the tube and furnishedwith a pin which enters the slot or slots therein, aspringinterposedbetween the cap and shaft for recovering the tube after it has beenpushed inward, an escapementwheel mounted on the shaft, a palletengaging with the said wheel, an arbor for the said pallet, ahammer-tail mounted in the said arbor, a hammer attached to the saidhammer-tail, a bell, and means for supporting and guiding the saidparts, substantially as described.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

EDWIN S. PIPER.

IOC

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